> Hydrogen may be generated by renewable sources such as solar energy, making it overall a cleaner alternative than batteries on a well to wheel basis Err, wha

> Hydrogen may be generated by renewable sources such as solar energy, making it overall a cleaner alternative than batteries on a well to wheel basis Err, what? I guess you could contrive a scenario in which the extra solar panels and equipment needed for generating, managing and storing the hydrogen was less "well" than the batteries for equivalent "wheel" output. Perhaps if you make infrequent but long journeys, so you need a big battery, but only a small amount of power generation, but hydrogen is a very inefficient way of storing electrical power, maybe 50% of the energy back compared to over 90% with batteries.